Considering Dick authorized another author to write sequels to his novel Do Androids Dream of Electric Sleep, the idea of Hollywood making se/pre-quels to Bladerunner doesn't seem like a big deal to me, especially with Scott the director. Yeah, I'm still hesitant about ruining something that was perfectly good as is by trying to add more, but that's the way it goes. However If they do a good job everyone will be happy and more people will want to see Bladerunner. (I've met quite a large number of people who still haven't seen any of the various edits!)